Table 1.
Serum P-ANCA titers in the various P-ANCA-positive autoimmune disease patients studied.
| Patient Groups | P-ANCA Serum Titers (No Positive) | ||||||
|---|---|---|---|---|---|---|---|
| ≥1:640 | 1:320 | 1:160 | 1:80 | 1:40 | 1:20 | ||
| Vasculitides | MPA (n = 18) | 9 | 5 | 1 | 1 | 1 | 1 |
| BD (n = 2) | 1 | 1 | 0 | 0 | 0 | 0 | |
| Aortitis (n = 1) | 1 | 0 | 0 | 0 | 0 | 0 | |
| HSP (n = 2) | 0 | 0 | 1 | 1 | 0 | 0 | |
| CV (n = 1) | 0 | 1 | 0 | 0 | 0 | 0 | |
| SLE (n = 28) | 9 | 6 | 3 | 7 | 23 | 0 | |
| APS (n = 5) | 1 | 1 | 1 | 1 | 0 | 1 | |
| SS (n = 7) | 5 | 0 | 0 | 0 | 0 | 2 | |
| RA (n = 3) | 2 | 0 | 0 | 1 | 0 | 0 | |
| SSCL (n = 1) | 0 | 1 | 0 | 0 | 0 | 0 | |
| Sarcoidosis | (n = 1) | 0 | 0 | 1 | 0 | 0 | 0 |
| Hashimoto | (n = 13) | 2 | 1 | 4 | 2 | 1 | 3 |
P-ANCA: perinuclear antineutrophil cytoplasmic antibodies, MPA: microscopic polyangiitis, BD: Behcet’s disease, HSP: Henoch–Schonlein purpura, CV: cryoglobulinemic vasculitis, SLE: systemic lupus erythematosus, APS: antiphospholipid syndrome, SS: Sjögren’s syndrome, RA: rheumatoid arthritis, SSCL: systemic sclerosis.